Piedmont Weather Forecast

    • 54
    • 76

    Increasing Clouds

    • 55
    • 71

    Mostly Cloudy

    • 55
    • 67

    Rain

    • 52
    • 66

    Chance Rain

    • 53
    • 71

    Partly Sunny

    • 57
    • 79

    Mostly Sunny

    • 59
    • 84

    Mostly Sunny

Today 10 Sep Inner Portland Metro

Partly sunny Early, then becoming mostly cloudy. Highs in the upper 70s. Northwest wind 5 to 10 Mph.

Tonight 10 Sep Inner Portland Metro

Partly cloudy. Lows in the lower 50s. Northwest wind 5 to 10 Mph, becoming light after midnight.

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Piedmont Temperature Statistics

September Temperature

Portland, Portland International Airport (3.1 miles)

  • Lowest 8 September, 2026

    52 °F

  • Average September

    64 °F

  • Highest 8 September, 2026

    81 °F

Climate (2021–2026)

Portland, Portland International Airport (3.1 miles)

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  • Average Low 2021–2026

    48.3 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.4 °F
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